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The rapidity densities corresponding to 0-10% central events are found to be $\\mathrm{d}N/\\mathrm{d}y _{^{4}\\mathrm{He}} = (0.8 \\pm 0.4 ~(\\mathrm{stat}) \\pm 0.3~(\\mathrm{syst}))\\times 10^{-6}$ and $\\mathrm{d}N/\\mathrm{d}y _{^{4}\\mathrm{\\overline{He}}} = (1.1 \\pm 0.4~(\\mathrm{stat}) \\pm 0.2~(\\mathrm{syst}))\\times 10^{-6}$, respectively. 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The rapidity densities corresponding to 0-10% central events are found to be $\\mathrm{d}N/\\mathrm{d}y _{^{4}\\mathrm{He}} = (0.8 \\pm 0.4 ~(\\mathrm{stat}) \\pm 0.3~(\\mathrm{syst}))\\times 10^{-6}$ and $\\mathrm{d}N/\\mathrm{d}y _{^{4}\\mathrm{\\overline{He}}} = (1.1 \\pm 0.4~(\\mathrm{stat}) \\pm 0.2~(\\mathrm{syst}))\\times 10^{-6}$, respectively. 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